An energy-saving lamp costs twenty or thirty yuan, while an incandescent lamp costs two or three yuan. Many consumers will buy lamps based on price, but they do not know how to use energy-saving lamps to save money. Because the energy-saving lamp of high-quality energy-saving lamps is more than five times that of incandescent lamps, the lifespan is five times that of incandescent lamps. The selection of high-quality energy-saving lamps should start with three indicators.
Teach you to buy energy-saving lamps correctly
Indicator 1 Phosphor coating
The high-quality product adopts rare earth trichromatic phosphor coating, which has high luminous efficiency, high color rendering index, good thermal stability and long service life. A high-quality energy-saving lamp is equivalent to the use time of 3 to 8 inferior energy-saving lamps, and the cost is 30 times that of ordinary halogen powder.
Inferior products may use a mixed powder coating of halogen powder or rare earth trichromatic phosphor mixed with halogen powder, which has a luminous efficiency lower than that of rare earth trichromatic phosphors by 30%, low color rendering index, poor thermal stability, severe light decay and short life. The price is low, especially unsuitable for use in thin tube fluorescent lamps.
Reminder: Lamps with poor color rendering will not only make the makeup color cast, but also easily cause the child to be weak. Under the light of good color rendering, the objects seen are closer to the color of the midday sun.